/*
 * Distributed as part of mchange-commons-java 0.2.11
 *
 * Copyright (C) 2015 Machinery For Change, Inc.
 *
 * Author: Steve Waldman <swaldman@mchange.com>
 *
 * This library is free software; you can redistribute it and/or modify
 * it under the terms of EITHER:
 *
 *     1) The GNU Lesser General Public License (LGPL), version 2.1, as 
 *        published by the Free Software Foundation
 *
 * OR
 *
 *     2) The Eclipse Public License (EPL), version 1.0
 *
 * You may choose which license to accept if you wish to redistribute
 * or modify this work. You may offer derivatives of this work
 * under the license you have chosen, or you may provide the same
 * choice of license which you have been offered here.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * You should have received copies of both LGPL v2.1 and EPL v1.0
 * along with this software; see the files LICENSE-EPL and LICENSE-LGPL.
 * If not, the text of these licenses are currently available at
 *
 * LGPL v2.1: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 *  EPL v1.0: http://www.eclipse.org/org/documents/epl-v10.php 
 * 
 */

package com.mchange.v1.db.sql.schemarep;

import java.util.List;
import java.util.ArrayList;
import java.util.Collections;
import com.mchange.v1.util.ListUtils;

public class ForeignKeyRepImpl implements ForeignKeyRep
{
    List locColNames;
    String refTableName;
    List refColNames;

    public ForeignKeyRepImpl(List locColNames, String refTableName, List refColNames)
    {
	this.locColNames = Collections.unmodifiableList( new ArrayList( locColNames ) );
	this.refTableName = refTableName;
	this.refColNames = Collections.unmodifiableList( new ArrayList( refColNames ) );
    }

    public List getLocalColumnNames()
    { return locColNames; }

    public String getReferencedTableName()
    { return refTableName; }

    public List getReferencedColumnNames()
    { return refColNames; }

    public boolean equals( Object o )
    {
	if (o == null || this.getClass() != o.getClass())
	    return false;

	ForeignKeyRepImpl other = (ForeignKeyRepImpl) o;
	return
	    ListUtils.equivalent( this.locColNames, other.locColNames ) &&
	    this.refTableName.equals( other.refTableName ) &&
	    ListUtils.equivalent( this.refColNames, other.refColNames );
    }

    public int hashCode()
    {
	return 
	    ListUtils.hashContents ( this.locColNames ) ^
	    this.refTableName.hashCode() ^
	    ListUtils.hashContents( this.refColNames );
    }
}
